PCE in Native IP Network
draft-ietf-teas-pce-native-ip-14

Document Type Active Internet-Draft (teas WG)
Authors Aijun Wang  , Boris Khasanov  , Quintin Zhao  , Huaimo Chen 
Last updated 2020-11-26 (latest revision 2020-11-24)
Replaces draft-wang-teas-pce-native-ip
Stream IETF
Intended RFC status Informational
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Stream WG state Submitted to IESG for Publication
Document shepherd Lou Berger
Shepherd write-up Show (last changed 2020-06-07)
IESG IESG state In Last Call (ends 2020-12-10)
Consensus Boilerplate Yes
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Responsible AD Deborah Brungard
Send notices to Lou Berger <lberger@labn.net>
IANA IANA review state IANA - Review Needed
TEAS Working Group                                               A. Wang
Internet-Draft                                             China Telecom
Intended status: Informational                               B. Khasanov
Expires: May 29, 2021                                         Yandex LLC
                                                                 Q. Zhao
                                                        Etheric Networks
                                                                 H. Chen
                                                               Futurewei
                                                       November 25, 2020

                        PCE in Native IP Network
                    draft-ietf-teas-pce-native-ip-14

Abstract

   This document defines an architecture for providing traffic
   engineering in a native IP network using multiple BGP sessions and a
   Path Computation Element (PCE)-based central control mechanism.  It
   defines the Central Control Dynamic Routing (CCDR) procedures and
   identifies needed extensions for the Path Computation Element
   Communication Protocol (PCEP).

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 29, 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of

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Internet-Draft          PCE in Native IP Network           November 2020

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  CCDR Architecture in Simple Topology  . . . . . . . . . . . .   4
   4.  CCDR Architecture in Large Scale Topology . . . . . . . . . .   5
   5.  CCDR Multiple BGP Sessions Strategy . . . . . . . . . . . . .   6
   6.  PCEP Extension for Key Parameters Delivery  . . . . . . . . .   8
   7.  Deployment Consideration  . . . . . . . . . . . . . . . . . .   9
     7.1.  Scalability . . . . . . . . . . . . . . . . . . . . . . .   9
     7.2.  High Availability . . . . . . . . . . . . . . . . . . . .   9
     7.3.  Incremental deployment  . . . . . . . . . . . . . . . . .  10
     7.4.  Loop Avoidance  . . . . . . . . . . . . . . . . . . . . .  10
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   10. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .  11
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     11.2.  Informative References . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   [RFC8283], based on an extension of the PCE architecture described in
   [RFC4655] , introduced a broader use applicability for a PCE as a
   central controller.  PCEP is continued to be used as the protocol
   between PCE and PCC.  Building on this work, this document describes
   a solution using a PCE for centralized control in a native IP network
   to provide End-to-End(E2E) performance assurance and QoS for traffic.
   The solution combines the use of distributed routing protocols and a
   centralized controller, referred to as Centralized Control Dynamic
   Routing(CCDR).

   [RFC8735] describes the scenarios and simulation results for traffic
   engineering in a native IP network based on use of a CCDR
   architecture.  Per [RFC8735], the architecture for traffic
   engineering in a native IP network should meet the following
   criteria:

   o  Same solution for native IPv4 and IPv6 traffic.

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